bitmap_skpicture_content_layer_updater.h revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd 
1// Copyright 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CC_RESOURCES_BITMAP_SKPICTURE_CONTENT_LAYER_UPDATER_H_
6#define CC_RESOURCES_BITMAP_SKPICTURE_CONTENT_LAYER_UPDATER_H_
7
8#include "cc/resources/skpicture_content_layer_updater.h"
9#include "third_party/skia/include/core/SkBitmap.h"
10
11namespace cc {
12
13// This class records the content_rect into an SkPicture, then software
14// rasterizes the SkPicture into bitmaps for each tile. This implements
15// LayerTreeSettingSettings::per_tile_painting_enabled.
16class BitmapSkPictureContentLayerUpdater : public SkPictureContentLayerUpdater {
17 public:
18  class Resource : public ContentLayerUpdater::Resource {
19   public:
20    Resource(BitmapSkPictureContentLayerUpdater* updater,
21             scoped_ptr<PrioritizedResource> texture);
22
23    virtual void Update(ResourceUpdateQueue* queue,
24                        gfx::Rect source_rect,
25                        gfx::Vector2d dest_offset,
26                        bool partial_update,
27                        RenderingStats* stats) OVERRIDE;
28
29   private:
30    SkBitmap bitmap_;
31    BitmapSkPictureContentLayerUpdater* updater_;
32
33    DISALLOW_COPY_AND_ASSIGN(Resource);
34  };
35
36  static scoped_refptr<BitmapSkPictureContentLayerUpdater> Create(
37      scoped_ptr<LayerPainter> painter);
38
39  virtual scoped_ptr<LayerUpdater::Resource> CreateResource(
40      PrioritizedResourceManager* manager) OVERRIDE;
41  void PaintContentsRect(SkCanvas* canvas,
42                         gfx::Rect source_rect,
43                         RenderingStats* stats);
44
45 private:
46  explicit BitmapSkPictureContentLayerUpdater(scoped_ptr<LayerPainter> painter);
47  virtual ~BitmapSkPictureContentLayerUpdater();
48
49  DISALLOW_COPY_AND_ASSIGN(BitmapSkPictureContentLayerUpdater);
50};
51
52}  // namespace cc
53
54#endif  // CC_RESOURCES_BITMAP_SKPICTURE_CONTENT_LAYER_UPDATER_H_
55